Configuring Domain Name Service
155
NXA-ENET24 - Software Management Guide
Configuring Domain Name Service
Overview
The Domain Naming System (DNS) service on this switch allows host names to be mapped to IP addresses
using static table entries or by redirection to other name servers on the network. When a client device
designates this switch as a DNS server, the client will attempt to resolve host names into IP addresses by
forwarding DNS queries to the switch, and waiting for a response.
You can manually configure entries in the DNS table used for mapping domain names to IP addresses,
configure default domain names, or specify one or more name servers to use for domain name to address
translation.

Configuring General DNS Server Parameters

Command Usage
To enable DNS service on this switch, first configure one or more name servers, and then enable
domain lookup status.
To append domain names to incomplete host names received from a DNS client (i.e., not formatted
with dotted notation), you can specify a default domain name or a list of domain names to be tried
in sequential order.
If there is no domain list, the default domain name is used. If there is a domain list, the default
domain name is not used.
When an incomplete host name is received by the DNS server on this switch and a domain name list
has been specified, the switch will work through the domain list, appending each domain name in
the list to the host name, and checking with the specified name servers for a match.
When more than one name server is specified, the servers are queried in the specified sequence until
a response is received, or the end of the list is reached with no response.
Note that if all name servers are deleted, DNS will automatically be disabled.
Command Attributes
• Domain Lookup Status: Enables DNS host name-to-address translation.
• Default Domain Name: Defines the default domain name appended to incomplete host names.
• Range: 1-64 alphanumeric characters
• Do not include the initial dot that separates the host name from the domain
name.
• Domain Name List: Defines define a list of domain names that can be appended to incomplete host
names.
• Range: 1-64 alphanumeric characters. 1-5 names
• Do not include the initial dot that separates the host name from the domain
name.
• Name Server List: Specifies the address of one or more domain name servers to use for name-to-
address resolution.
• Range: 1-6 IP addresses